package com.jg.framework.utils.Barcode;

import com.jg.inout.ConfigUtils;
import org.apache.commons.lang.StringUtils;
import org.krysalis.barcode4j.impl.code39.Code39Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.krysalis.barcode4j.tools.UnitConv;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RestController;

import java.awt.image.BufferedImage;
import java.io.*;

/**
 * 条形码生成工具
 * @author chenzeen
 *
 */
public class BarcodeUtil {

    @Autowired
    private static ConfigUtils configUtils;

	/**
     * 生成文件
     *
     * @param msg
     * @param path
     * @return
     */
    public static String generateFile(String msg) {
    	String mkd = "barcode";
		String path = configUtils.getFileSys() + File.separator + mkd ;
        File file = new File(path);
        if(!file.exists()) {
        	file.mkdirs();
        }
        String fileName = msg+".png";
        File f = new File(path + File.separator +fileName);
        try {
            generate(msg, new FileOutputStream(f));
        } catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        }
        return mkd + File.separator +fileName;
    }
 
    /**
     * 生成字节
     *
     * @param msg
     * @return
     */
    public static byte[] generate(String msg) {
        ByteArrayOutputStream ous = new ByteArrayOutputStream();
        generate(msg, ous);
        return ous.toByteArray();
    }
 
    /**
     * 生成到流
     *
     * @param msg
     * @param ous
     */
    public static void generate(String msg, OutputStream ous) {
        if (StringUtils.isEmpty(msg) || ous == null) {
            return;
        }
 
        Code39Bean bean = new Code39Bean();
 
        // 精细度
        final int dpi = 150;
        // module宽度
        final double moduleWidth = UnitConv.in2mm(1.0f / dpi);
 
        // 配置对象
        bean.setModuleWidth(moduleWidth);
        bean.setWideFactor(3);
        bean.doQuietZone(false);
 
        String format = "image/png";
        try {
 
            // 输出到流
            BitmapCanvasProvider canvas = new BitmapCanvasProvider(ous, format, dpi,
                    BufferedImage.TYPE_BYTE_BINARY, false, 0);
 
            // 生成条形码
            bean.generateBarcode(canvas, msg);
 
            // 结束绘制
            canvas.finish();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
    
    public static void main(String[] args) {
    	String msg = "123456789";
        String path = "d:/barcode.png";
        generateFile(msg);
	}
}
